<!doctype html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml" xmlns:v-on="http://www.w3.org/1999/xhtml" xmlns:v-model="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>

<div id="app">
    <div>{{msg}}</div>
</div>


</body>
<script src="../../vender/vue@2.4.2.js"></script>
<script>
    var app=new Vue({
        el:'#app',
        data:{
            msg:'Hello'
        }
    });

    app.msg='new msg';
    console.log(app.$el.textContent=='new msg');//false

    Vue.nextTick(()=>{
        console.log(app.$el.textContent=='new msg');//true
    });

</script>
</html>